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Boilers and Water Heaters - Sales, Service, Repair

RBI Boilers

We have been selling, servicing, and repairing boilers in Los Angeles, Orange County, and San Diego areas since 1978. Our experienced technicians are available 24/7 and can help you make the best selection for your specific application. We also offer rental boilers and have a warehouse stocked with parts for all your boiler room needs.

High Efficiency Boiler Sales

DB Sales and Service is a leading manufacturer’s sales rep of boilers in Southern California. We have selected and provided boilers for virtually every type of commercial and industrial buildings over the last 40 years and would be honored to help with yours too.

For new construction, our engineers work with your consultants or engineers to lay out the design and write the specifications. If you need a boiler swap for an existing building, we’ll come to your location and analyze the requirements to see which boiler and configuration would provide the necessary heating as efficiently as possible.

  • Hydronic boilers
  • Steam boilers
  • Water Heaters
  • Tankless water heaters
  • Booster pumps
  • Hydronic specialties
  • Pumps
  • Heat exchangers

Boiler Service

Most boilers only operate around 60% efficiency. Our goal is to dramatically improve efficiency and reduce carbon emissions when we service your equipment. We achieve this by using the leading parts, equipment, and technology. Technicians at DB Sales work with the best manufacturers in the business for a broad spectrum of boiler types.

  • Combustion tune-ups
  • Boiler retubes
  • Refractory repair
  • Maintenance plans
  • Control upgrades
  • Annual inspections
  • Retrofits
  • Emission monitoring
  • 24 hour emergency service
The National Board of Boiler & Pressure Vessel Inspectors certifies that DB Sales & Service is authorized to make metallic repairs and alterations at shop and field locations. The permits DB Sales & Service additional capabilities in the service and repair of fired boilers and pressure vessels and other ASME code equipment.

Boiler Retrofits

When adding new parts, equipment, and technology to a boiler, the goal is to increase the efficiency of a system. New advancements and design improvements allow an older unit to increase its potential. Since most boilers only operate at around 60%, replacing or retrofitting of an older boiler could equal huge cost savings for a company.

Retrofits can be to switch to ultra Low NOx burners to meet current emission standards. Or perhaps to upgrade controls to the latest microprocessor technology or PLS-based control systems.

An average boiler can consume almost four times its cost every year in energy. Enhanced function of a new or retrofitted boiler saves fuel and improves the quality of overall output. Finally, a boiler that has been replaced or retrofitted reduces the emission of carbon and other pollutants into the air.

Rebates for Boilers

DB Sales is an expert in energy efficient equipment rebates. We work with all our customers to identify potential rebates for boilers in Los Angeles, Orange County, and San Diego areas. Then, our team will source and install burner and control systems to retrofit existing boilers to meet ultra-low NOx emission standards.

Call for pricing and availability

We install and service the following boilers:

Ace Heaters and Ajax Boiler

Ajax Boiler, recently purchased by Ace Heaters, has provided Southern California with a comprehensive line of boiler and commercial water heating products with reputations for reliability, serviceability, and cost effective operation.

DB Sales supports three distinct product lines of the company; the Ajax Series for the commercial boiler market, the Ace Series for the water heating market, and the Atlas Series for the high-efficiency, condensing boiler and water heating markets.

About Ace Heaters

Ace is a leader in the Southern California market, supplying boilers for healthcare, breweries, industrial, institutional and commercial applications since 1919. They are also the market leader in semi-instantaneous heat exchangers and clean steam generators.

  • Atlas High Efficiency Condensing Boilers
  • Ajax Boilers and Ace Series
  • Low NOx Boiler Systems
  • Water Boilers
  • Semi-instantaneous Heat Exchangers
  • Clean Steam Generators

Sales, Service, Maintenance and Parts for Atlas Boilers

Even though the steel tube hot water boilers and steam boilers manufactured by Atlas Boiler have been discontinued by the new company owner, DB Sales continues to support those products as well as all Ace Heating Solutions Products. Our support process includes:

  • New replacement boilers for all existing Ajax boilers and new applications
  • Parts for all existing Ajax steam, hot water and Atlas series boiler
  • Factory trained service technicians for service of all Ajax steam, hot water and Atlas series boilers
  • Rebuilding and retubing services available for Ajax boilers

More about Ace Heaters boilers

Advanced Thermal Hydronics (HydroTherm)

HydroTherm (now rebranded as Advanced Thermal Hydronics) manufacturers some of the most efficient high-performance and high-mass boilers on the market, and at competitive rates. Its boilers provide maximum efficiency and flexibility in commercial and residential heating applications.

Their KN Series boiler units offer efficiencies of up to 93% and are available with outputs ranging from 200 MBH to 3,000 MBH. Units can be combined to meet the load requirements of any commercial heating application.

“We are proud to be partnered with a company whose solutions are pre-certified to meet the emission requirements of the South Coast Air Quality Management District, which is the largest air quality district in Southern California.” — Steve Mertz, owner of DB Sales

About Advanced Thermal Hydronics

HydroTherm was recently rebranded as Advanced Thermal Hydronics. The company is owned by Mestek, which has been in the business of providing engineering solutions since 1946. HydroTherm pioneered the modular boiler, which has revolutionized the heating industry. The company supports greener building and is certified for boilers with efficiencies exceeding 90% AFUE.

  • High Efficiency Cast Iron
  • Condensing Boilers

More about ATH boilers

Bryan Boilers

Bryan Boiler manufactures the largest high-pressure steam boiler allowed in CA that does not required a mandatory boiler attendant. Several Bryant boiler product series are available with a low NOx package to reduce nitrogen oxide emissions.

About Bryan Boilers

Bryan Boiler was the inventor of commercial water tube boiler technically, more than 100 years ago. They build a boiler for every purpose and for use with all energy sources -- steam boilers, hot water boilers and indirect water heaters.

  • Commercial Watertube Boilers
  • Electric Boilers
  • Feedwater Systems
  • Blowdown Systems
  • Deaerators
  • Chemical Feed Systems

More about Bryan Boilers

Burnham Commercial Boilers

Burnham Commercial Boilers manufactures a variety of high-quality boilers and control systems for commercial and industrial applications. Burnham takes pride in passing its products through rigorous performance and safety test to ensure their reliability and efficiency.

Burnham’s high-efficiency lines include the Series C and model 4S, which are ideal for larger projects such as process plants and military applications; they can be hot water or steam.

About Burnham Commercial

Burnham Commercial is a leading manufacturer and marketer of high-quality boilers and control systems for commercial and industrial applications. Burnham’s engineers work with state-of-the-art modeling and design programs to create efficient and reliable products.

  • Firetube Boilers
  • Firebox Boilers
  • Cast Iron Sectional Boilers
  • Blowdown Systems
  • Water Softener Systems
  • Chemical Feed Systems
  • Deaerators
  • Feedwater Systems
  • Compact Firetube Boilers

More about Burnham Commercial boilers


Indeck offers a variety of water tube boilers, package boilers, biomass boilers, new and used boilers, boiler parts, and more. The company is well known for its large and complex systems, including products for many specialized applications. These would involve high-temperature water, large steam applications, and very complex waste heat recovery.

Indeck offers a complete line of low- and high-temperature packaged hot water generators from 10,000,000 to 200,000,000 BTU/hr. Indeck’s TJW-C boiler design provides maximum efficiency for fuel and cost savings. Its boilers are well suited to large industrial applications such as power plants, airports, universities, hospitals, government installations and military bases.

DB Sales works with major engineering firms on these types of installations; we have established business relationships with such leading large engineering firms as Worley Parsons.


About Indeck

Indeck is a leading boiler designer, manufacturer, and steam power specialist that has been providing boiler engineering for over 160 years. Indeck has been providing green power solutions for decades with boiler units capable of burning multiple and unique green fuels.

  • Water Tube Steam Boilers
  • High-Temperature Hot Water
  • Boilers
  • Solid Fuel Boilers
  • Thermal Oxidizers
  • Waste Heat Recovery Boilers

More about Indeck boilers


Intellihot’s commercial hybrid water heaters are of a tankless high efficiency design. They can be cascaded for increased capacity, yet each one operates autonomously. By eliminating the need for a master controller the risk of a single point of failure is removed. While a single unit is being checked or serviced, the cascade will continue to function smoothly to ensure continuous hot water.

About Intellihot

Intellihot designs, manufactures and assembles tankless water heaters for residential, commercial and industrial applications. The company is distinguished by the extensive research and innovative design of its tankless water heaters. The products are made entirely in the U.S.

  • High Efficiency Tankless Water Heaters

More about Intellihot industrial water heaters

Intellihot industrial water heater



RBI offers a complete line of finned copper-tube boilers and water heaters. The company manufactures both mid- and high–efficiency products that are among the most cost-effective units on the market. All of RBI’s boiler and water heater products offer a direct spark ignition for a more robust design, unlike any of RBI’s competitors. Its products have a reputation for reliability and good controls.

RBI has a variety of high efficiency boilers, including its Futera Fusion XLF boiler that maintains ultra-high efficiencies of up to 99%.

About RBI

RBI is part of the Mestek family of companies, which also owns HydroTherm and Arrow United. The Mestek Institute has been in the business of providing engineering solutions since 1946. Models are available to fit any commercial application, from atmospheric to fan-assisted sealed combustion in a wide 100,000 to 4,000,000 BTU capacity range.

  • Copper-Fin Tube Type
  • High-Efficiency Condensing Boilers
  • Commercial Heating
  • Domestic Water Heaters

More about RBI boilers and water heaters


RECO’s counter-flow heat exchanger technology is an important element of a high efficiency condensing boiler system design. These higher efficiency projects are becoming prevalent in the marketplace.

About Reco USA

RECO USA is a leading manufacturer of pressure vessels, water heating and storage products for the commercial, institutional and industrial markets. This family-run company has more than 70 years of experience in offering innovative technology with solid craftsmanship. You can be assured of a quality product that will meet the toughest demands day after day.

  • Semi-instantaneous Heat Exchangers
  • Clean Steam Generators
  • Counter-flow Heat Exchangers
  • Chilled Water Buffer Tank

More about RECO USA heaters